This case is brought here by appeal from an order of the district court of the United States for the northern district of Ohio, refusing an application for interlocutory injunction upon the petition of the Rail & River Coal Company, a West Virginia corporation, against Wallace D. Yaple, Mathew B. Hammond, and Thomas J. Duffy, as members of and constituting the Industrial Commission of Ohio. The application was heard under § 266 of the Judicial Code [36 Stat. at L. 1162, chap. 231, Comp. Stat. 1913, § 1243], before a circuit judge and two district judges. The object of the bill was to restrain the Industrial Commission from putting into effect the so-called 'run-of-mine' or 'anti-screen' law of the state of Ohio, passed February 5th, 1914, by the legislature of that state, being entitled, 'An Act to Regulate the Weighing of Coal at the Mines.' 104 Ohio Laws, 181. A copy of the act is inserted in the margin.1

2

Summarized, the bill sets forth that plaintiff is engaged in the mining business in Ohio, owning a large tract of coal lands, of approximately 32,000 acres, upon which it has four coal mines properly developed, employing upwardof 2,000 persons; that in the state of Ohio there are about 600 coal mines, employing upwards of 45,000 persons; that in the year 1913 more than 36,000,000 tons of coal were produced, and there was expended in wages to said employees upwards of $26,000,000; that the defendants are the members of the Industrial Commission of Ohio, vested by the legislature of that state with authority to enforce the provisions of the 'mine-run law;' that for many years mining has been conducted in the state of Ohio by the miners entering into contracts with their employers for a period of two years; that the last contracts expired on April 1, 1914.

3

The bill set forth the provisions of the act, and alleged that the same are unreasonable and arbitrary and impracticable in operation, and that the act is unconstitutional, as in violation of the 14th Amendment to the Constitution of the United States, and in violation of the Constitution of the state of Ohio, and that it delegates legislative authority to the Industrial Commission of the state; and although the bill was filed before the act went into effect, it was alleged that the Industrial Commission, in putting the same into effect, would work an irreparable injury to the plaintiff. Upon application under this bill to the district court, composed of three judges, the injunction was denied (214 Fed. 273), and the case is appealed to this court.

4

Under the system of wage payment and mining of coal in use before the passage of this statute, miners in Ohio were paid at a certain price per ton for screened lump coal, that is, for coal which, after it is mined and brought to the surface, is passed over a screen, the bars of which are 1 1/4 inches apart. The report of the Ohio Coal Mining Commission, a public document, copies of which have been filed by counsel in this case, shows that that system of mining was regarded as objectionable by the miners, on the ground that they were not paid for mining of a considerable quantity of marketable coal, and there was dissatisfaction because of the wearing of the screens so as to increase the size of the apertures between the bars above the standard. In Ohio, as in some other states, there was much complaint because of this system. It appears that the employers generally desired to preserve the screened-coal basis of payment, and objected to the run-of-mine system, in which the miner is paid for mining coal as it is when mined without screening. Before enacting the legislation now in controversy in the state of Ohio, the question was referred to a Coal Mining Commission, which commission, after full investigation of the subject, made the report referred to, in which it appears that the arguments pro and con were considered and reported upon, and a bill was recommended in the form in which the legislature passed the present law. The report of the commission cannot be read without a conviction that there was an earnest attempt to eliminate the objections to the 'run-of-mine' basis of payment to the miners, and to enact a system fair alike to employer and miner.

5

The principal objections of the employers to the run-of-mine system adopted in some of the states are: a tendency to produce coal unduly mixed and mingled with slate, sulphur, rock, dirt, and other impurities; and to yield an increased quantity of fine coal, to the loss of the employer.

6

As we have said, the result of the consideration of the objections to this system, by the commission report, was the enactment of the present law.

7

Its 1st section shows that it attempts to substitute for the system theretofore in use in the state, where the terms of employment required payment for mining or loading coal on the basis of the ton or other weight, one by which the miner shall be paid according to the total weight of all the coal contained in the mine car in which the same has been removed from the mine; providing, however, that no greater percentage of slate, sulphur, rock, dirt, or other impurity shall be contained in the contents of such car than that ascertained and determined by the Industrial Commission of Ohio.

8

By the 2d section of the act, the Industrial Commission is required to ascertain and determine the percentage of slate, sulphur, rock, dirt, or other impurity unavoidable in the proper mining or loading of such cars in the mines of the state. Evidently this section recognized and considered the objections to the plan of payment adopted in the 1st section, payment by run of mine, and provided for ascertaining by means of the commission of the percentage of slate, sulphur, rock, dirt, or other impurity which evidently the lawmakers regarded as impracticable to prevent altogether in the mining of coal. In other words, the employer was not obliged to compensate the miner for everything sent up in the car, no matter how loaded with dirt and impurities. The object was to ascertain the amount of unavoidable impurities in proper mining, and place a limitation upon the miner to that extent.

9

In fixing the penalties for infractions of the act, § 7 penalizes the miner or loader for the contents of a car containing a greater percentage of impurities than that ascertained or determined by the Industrial Commission, and the miner for such infraction is made guilty of a misdemeanor and punishable upon conviction. Section 7 contains the important proviso that nothing contained in the section shall affect the right of a miner or loader and his employer to agree upon deductions by the system known as docking, on account of such slate, sulphur, rock, dirt, or other impurity.

10

In other words, the ascertainment of the Industrial Commission which is provided in §§ 1 and 2 is not to be a limitation upon the right of the employer and miner to agree upon deductions of their own arrangement as to the amount of slate, sulphur, rock, dirt, or other impurity permitted in the mining of coal. The employer and miner may substitute their own agreement in that respect for the ascertainment of the commission, and the law fixes no penalty for the mining of coal with such measure of impurities as the employer and miner have thus agreed upon.

11

Section 3 makes it the duty of the miner and employer to agree upon and fix the percentage of fine coal commonly known as nut, pea, dust, and slack allowed in the output of the mines, and where they do not agree, the Industrial Commission may fix such percentage, which percentage thus established shall remain in force until otherwise agreed upon between miner and employer, and the commission, when it finds the percentage of fine coal as fixed by the Industrial Commission has been exceeded, may make, enter, and cause to be enforced such order or orders as will result in reducing the percentage of fine coal to the amount fixed by it.

12

The report of the Coal Commission (pages 59 and 60) shows the consideration which that body gave to this subject in the interest of fair mining, and its desire to obviate by this provision the undue production of fine coal to the disadvantage of the employer.

13

By § 5, the Industrial Commission is given power from time to time, upon investigation, to change the percentage by it ascertained and determined, or fixed by its previous orders.

14

The only penalty fixed by the law against the employer is contained in § 6, where it is made unlawful for the employer to pass the coal over a screen or other device, for the purpose of ascertaining and calculating the amount to be paid the miner or loader for mining or loading such contents, whereby the total weight of such contents shall be reduced or diminished.

15

There is nothing in the law to prevent the employer from screening his coal as he sees fit for other purposes, and so as to fit it for the market, in such wise as he may deem advisable. The inhibition on screening is only upon that operation when it is done for the purpose of calculating the amount to be paid to the miner for mining the coal. Moreover, it is important to be considered in this connection that the orders of the commission are not final, but are subject to review under the statute of Ohio found in 103 Ohio Laws, at page 95, where the orders of the commission are declared to be only prima facie reasonable, and any employer or other person interested is entitled upon petition to a hearing upon the reasonableness and lawfulness of the order before the commission, and under § 38 of the law, any employer or other person in interest, being dissatisfied with any order of the commission, may commence an action in the supreme court of Ohio to vacate or amend any such order upon the ground that the same is unreasonable or unlawful, and the supreme court is authorized to hear and determine such action, and may, in its discretion (§ 41) suspend all or any part of the order of the commission. The statute makes provision for the prompt hearing of all such actions, in preference to other civil cases, with some exceptions. It would seem that this system of law, with a right to review in the manner we have stated in the supreme court of Ohio, has provided a system ample for the protection of the rights of the employers (see Plymouth Coal Co. v. Pennsylvania, 232 U. S. 531, 58 L. ed. 713, 34 Sup. Ct. Rep. 359). And of course in this, as in other cases, only alleged infractions of constitutional rights of those complaining can be considered in determining the constitutionality of the law. Southern R. Co. v. King, 217 U. S. 524, 534, 54 L. ed. 868, 871, 30 Sup. Ct. Rep. 594; Rosenthal v. New York, 226 U. S. 260, 271, 57 L. ed. 212, 217, 33 Sup. Ct. Rep. 27, Ann. Cas. 1914B, 71; Jeffrey Mfg. Co. v. Blagg, 235 U. S. 571, 576, 59 L. ed. ——, 35 Sup. Ct. Rep. 167.

16

The objection that the law is unconstitutional as unduly abridging the freedom of contract in prescribing the particular method of compensation to be paid by employers to miners for the production of coal was made in the case of McLean v. Arkansas, 211 U. S. 539, 53 L. ed. 315, 29 Sup. Ct. Rep. 206, in which this court sustained a law of the state of Arkansas, requiring coal mined to be paid for according to the run-of-mine system according to its weight when brought out of the mine in cars. In that case the constitutional objections founded upon the right of contract which are made here were considered and disposed of. This court has so often affirmed the right of the state, in the exercise of its police power, to place reasonable restraints like that here involved, upon the freedom of contract, that we need only refer to some of the cases in passing. Schmidinger v. Chicago, 226 U. S. 578, 57 L. ed. 364, 33 Sup. Ct. Rep. 182, Ann. Cas. 1914B, 284; Chicago, B. & Q. R. Co. v. McGuire, 219 U. S. 549, 55 L. ed. 328, 31 Sup. Ct. Rep. 259, and cases therein cited and reviewed.

17

The contention that this law has no reasonable or legal relation to the object to be attained seems to us to be equally without foundation, in view of the recognized right of the legislature to regulate a business of this character, and to determine for itself, in the absence of arbitrary action, the measure of relief necessary to effect the desired purposes. That the law is within the authority of the Ohio legislature, acting under the Constitution of Ohio, there can be no question, in view of the authority conferred by that instrument in § 36, which provides that 'laws may be passed . . . to provide for the regulation of methods of mining, weighing, measuring, and marketing, coal, oil, gas, and other minerals.'

18

As to the alleged impracticability of the law, because of the impossibility of the Industrial Commission determining the quantity of dirt and other impurities in any coal mined, we can find no force in that objection. Agreements as to the amount of docking for dirt and impurities in the mining of coal have been constantly made, and it is not the province of a court to revise conclusions which men versed in the business have found practicable; certainly not in advance of an attempt to put the law into operation. The consideration of the law already given shows the means enacted to do away with these impurities, and to insure as far as possible the production of clean coal.

Section 1. Every miner and every loader of coal in any mine in this state, who, under the terms of his employment, is to be paid for mining or loading such coal on the basis of the ton or other weight, shall be paid for such mining or loading according to the total weight of all such coal contained within the car (hereinafter referred to as mine car) in which the same shall have been removed out of the mine; provided, the contents of such car when so removed shall contain no greater percentage of slate, sulphur, rock, dirt, or other impurity than that ascertained and determined by the Industrial Commission of Ohio as hereinafter enacted.

Section 2. Said Industrial Commission shall ascertain and determine the percentage of slate, sulphur, rock, dirt, or other impurity unavoidable in the proper mining or loading of the contents of mine cars of coal in the several operating mines within this state.

Section 3. It shall be the duty of such miner or loader of coal and his employer to agree upon and fix, for stipulated periods, the percentage of fine coal commonly known as nut, pea, dust, and slack allowable in the output of the mine wherein such miner or loader is employed. At any time when there shall not be in effect such agreed and fixed percentage of fine coal allowable in the output of any mine said Industrial Commission shall forthwith, upon request of such miner or loader, or his employer, fix such allowable percentage of fine coal, which percentage so fixed by said Industrial Commission shall continue in force until otherwise agreed and fixed by such miner or loader and his employer. Whenever said Industrial Commission shall find that the total output of such fine coal at any mine for a period of one month during which such mine shall have been operating while the percentage of fine coal so fixed by said Industrial dustrial Commission has been in force exceeds the percentage so fixed by it, said Industrial Commission shall at once make, enter, and cause to be enforced such order or orders relative to the production of coal at such mine as will result in reducing the percentage of such fine coal to the amount so fixed by said Industrial Commission.

Section 4. Said Industrial Commission shall, as to all coal mines in this state which have not been in operation heretofore, perform the duties imposed upon it by the provisions hereof.

Section 5. Said Industrial Commission shall have full power from time to time to change, upon investigation, any percentage by it ascertained and determined, or fixed, as provided in the preceding sections hereof.

Section 6. It shall be unlawful for the employer of a miner or loader of the contents of any car of coal to pass any part of such contents over a screen or other device, for the purpose of ascertaining or calculating the amount to be paid such miner or loader for mining or loading such contents, whereby the total weight of such contents shall be reduced or diminished. Any person, firm, or corporation violating the provisions of this section shall be deemed guilty of a misdemeanor, and, upon conviction, shall be fined for each separate offense not less than $300 nor more than $600.

Section 7. A miner or loader of the contents of a mine car, containing a greater percentage of slate, sulphur, rock, dirt, or other impurity, than that ascertained and determined by said Industrial Commission, as hereinabove provided, shall be guilty of a misdemeanor, and upon conviction shall be punished as follows: for the first offense within a period of three days he shall be fined 50 cents; for a second offense within such period of three days he shall be fined $1; and for the third offense within such period of three days he shall be fined not less than $2 nor more than $4. Provided, that nothing contained in this section shall affect the right of a miner or loader and his employer to agree upon deductions by the system known as docking, on account of such slate, sulphur, rock, dirt, or other impurity.